The PowerUp FPV flight time is up to 10 minutes of continuous flight time, but can be extended by replaceable batteries. These batteries can be replaced very quickly, so the PowerUp FPV flight time - with quick interruptions for battery replacements - can be seemingly infinite.
It is very possible that the PowerUp FPV flight time will be increased with the introduction of larger batteries in the future. But, as of now, flight time looks like it will reside at about 10 minutes.